air filter YAMAHA YFM350R-W 2007 Owners Manual

OPERATION .................................................. 6-1
Starting a cold engine ................................ 6-1
Starting a warm engine .............................. 6-3
Operating the drive select lever and
driving in reverse ...................................... 6-3
Shifting ....................................................... 6-4
Engine break-in .......................................... 6-6
Parking ....................................................... 6-7
Parking on a slope ..................................... 6-8
Accessories and loading ............................ 6-9
RIDING YOUR ATV ...................................... 7-1
GETTING TO KNOW YOUR ATV............... 7-2
RIDE WITH CARE AND GOOD
JUDGEMENT ............................................ 7-2
BE CAREFUL WHERE YOU RIDE ............. 7-9
TURNING YOUR ATV .............................. 7-13
CLIMBING UPHILL ................................... 7-14
RIDING DOWNHILL.................................. 7-17
CROSSING A SLOPE............................... 7-18
CROSSING THROUGH SHALLOW
WATER ................................................... 7-19
RIDING OVER ROUGH TERRAIN ........... 7-21
SLIDING AND SKIDDING ......................... 7-22
WHAT TO DO IF... .................................... 7-23
WHAT TO DO... ........................................ 7-23PERIODIC MAINTENANCE AND MINOR
REPAIR ..........................................................8-1
Owner’s manual and tool kit .......................8-1
Periodic maintenance and lubrication
chart ..........................................................8-3
Checking the spark plug .............................8-8
Engine oil and oil filter element .................8-10
Cleaning the air filter element ...................8-13
Cleaning the spark arrester ......................8-16
Adjusting the carburetor ............................8-17
Adjusting the engine idling speed .............8-17
Adjusting the throttle cable free play .........8-19
Valve clearance ........................................8-19
Checking the front and rear brake pads ...8-20
Checking the brake fluid level ...................8-21
Changing the brake fluid ...........................8-22
Checking the front brake lever free play ...8-22
Checking the brake pedal position ............8-23
Adjusting the parking brake free play .......8-24
Brake light switches ..................................8-25
Adjusting the clutch lever free play ...........8-26
Drive chain slack .......................................8-27
Lubricating the drive chain ........................8-30
Checking and lubricating the cables .........8-30
Checking and lubricating the brake and
clutch levers ............................................8-31U10P60E0.book Page 2 Thursday, June 15, 2006 4:19 PM

7-21
7
CAUTION:ECB00240After riding your ATV in water, be sure to drain
the trapped water by removing the check hose
at the bottom of the air filter case. Wash the
ATV in fresh water if it has been operated insalt water or muddy conditions.RIDING OVER ROUGH TERRAIN
Riding over rough terrain should be done with cau-
tion. Look out for obstacles which could cause
damage to the ATV or could lead to an upset or ac-
cident. Be sure to keep your feet firmly mounted on
the footboards at all times. Avoid jumping the ATV
as loss of control and damage to the ATV may re-
sult.
WARNING
EWB01650Before operating in a new area, check for ob-
stacles. Never attempt to ride over large obsta-
cles, such as large rocks or fallen trees. When1. Air filter case check hose
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8-3
8
EBU22403Periodic maintenance and lubrication chart NOTE:
For ATVs not equipped with an odometer or an hour meter, follow the month maintenance intervals.
For ATVs equipped with an odometer or an hour meter, follow the km (mi) or hours maintenance inter-
vals. However, keep in mind that if the ATV isn’t used for a long period of time, the month maintenance
intervals should be followed.
Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools,data and technical skills.NO. ITEMCHECK OR MAINTENANCE
JOBINITIAL EVERY
Whichev-
er comes
firstmonth136612
km
(mi)320
(200)1200
(750)2400
(1500)2400
(1500)4800
(3000)
hours 20 75 150 150 300
1*Fuel lineCheck fuel hoses for cracks or other damage, and
replace if necessary.√√√
2 Spark plugCheck condition and clean, regap, or replace if
necessary.√√√√√
3*ValvesCheck valve clearance and adjust if necessary.√ √√√
4 Air filter elementClean and replace if necessary.Every 20–40 hours (more often in wet or
dusty areas)
5*ClutchCheck operation and adjust if necessary.√ √√√
6*Front brakeCheck operation and correct if necessary.
Check fluid level and ATV for fluid leakage, and
correct if necessary.√√√√√
Replace brake pads. Whenever worn to the limit
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8-5
8
16*Drive chain rollersCheck for wear and replace if necessary.√√√
17*Chassis fastenersMake sure that all nuts, bolts, and screws are
properly tightened.√√√√√
18*Shock absorber as-
sembliesCheck operation and correct if necessary.
Check for oil leakage and replace if necessary.√√√
19*Rear suspension re-
lay arm and con-
necting arm
pivoting pointsCheck operation and correct if necessary.
Lubricate with lithium-soap-based grease.√√√√
20*Steering shaftLubricate with lithium-soap-based grease.√√√
21*Steering systemCheck operation and repair or replace if damaged.
Check toe-in and adjust if necessary.√√√√√
22*CarburetorCheck starter (choke) operation and correct if nec-
essary.
Check engine idling speed and adjust if neces-
sary.√√√√
23*Crankcase breather
systemCheck breather hose for cracks or other damage,
and replace if necessary.√√√
24 Engine oilChange.
Check ATV for oil leakage, and correct if neces-
sary.√ √√√
25Engine oil filter ele-
mentClean or replace if necessary.√√√
26 Engine oil strainerClean.√√√ NO. ITEMCHECK OR MAINTENANCE
JOBINITIAL EVERY
Whichev-
er comes
firstmonth136612
km
(mi)320
(200)1200
(750)2400
(1500)2400
(1500)4800
(3000)
hours 20 75 150 150 300U10P60E0.book Page 5 Thursday, June 15, 2006 4:19 PM

8-6
8
EBU28130NOTE:
The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
Hydraulic brake service
Regularly check and, if necessary, correct the brake fluid level.27*Moving parts and
cablesLubricate.√√√√
28*Throttle lever hous-
ing and cableCheck operation and correct if necessary.
Check throttle cable free play and adjust if neces-
sary.
Lubricate throttle lever housing and cable.√√√√√
29*Exhaust systemCheck for leakage and replace gasket(s) if neces-
sary.
Check for looseness and tighten all screw clamps
and joints if necessary.√√√
30 Spark arresterClean.√√√
31*Front and rear brake
switchesCheck operation and correct if necessary.√√√√√
32*Lights and switchesCheck operation and correct if necessary.
Adjust headlight beam.√√√√√ NO. ITEMCHECK OR MAINTENANCE
JOBINITIAL EVERY
Whichev-
er comes
firstmonth136612
km
(mi)320
(200)1200
(750)2400
(1500)2400
(1500)4800
(3000)
hours 20 75 150 150 300U10P60E0.book Page 6 Thursday, June 15, 2006 4:19 PM

8-13
8
CAUTION:ECB00300
In order to prevent clutch slippage (since the
engine oil also lubricates the clutch), do not
mix any chemical additives. Do not use oils
with a diesel specification of “CD” or oils of
a higher quality than specified. In addition,
do not use oils labeled “ENERGY CONSERV-
ING II” or higher.
Make sure that no foreign material enters thecrankcase.
12. Start the engine, and then let it idle for several
minutes while checking it for oil leakage. If oil
is leaking, immediately turn the engine off and
check for the cause.
13. Turn the engine off, and then check the oil lev-
el and correct it if necessary.
EBU23740Cleaning the air filter element The air filter element should be cleaned at the in-
tervals specified in the periodic maintenance and
lubrication chart. Clean the air filter element more
frequently if you are riding in unusually wet or dusty
areas.NOTE:There is a check hose at the bottom of the air filter
case. If dust or water collects in this hose, empty
the hose and clean the air filter element and air fil-ter case.
1. Remove the seat. (See page 4-14.) Recommended oil:
See page 10-1.
Oil quantity:
Without oil filter element replacement:
2.50 L (2.64 US qt) (2.20 Imp.qt)
With oil filter element replacement:
2.60 L (2.75 US qt) (2.29 Imp.qt)1. Air filter case check hose
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8-14
82. Remove the air filter case cover by unhooking
the holders.
3. Pull the air filter element out of the air filter
case.4. Remove the sponge material from the air filter
element frame.
1. Air filter case cover
2. Air filter case holder
1. Air filter element assembly
1. Unlock.
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8-15
8
5. Wash the sponge material gently but thor-
oughly in solvent.
WARNING
EWB01940Always use parts cleaning solvent to clean the
sponge material. Never use low-flash-point
solvents or gasoline to clean the sponge mate-
rial because the engine could catch fire or ex-plode.
6. Squeeze the excess solvent out of the sponge
material and let it dry.
CAUTION:ECB00440Do not twist the sponge material when squeez-ing it.
7. Check the sponge material and replace it if
damaged.
8. Apply a quality foam air filter oil to the sponge
material.NOTE:The sponge material should be wet but not drip-ping.
9. Pull the sponge material over the air filter ele-
ment frame.
10. Apply all-purpose grease to the air filter ele-
ment seat.
11. Insert the air filter element into the air filter
case, and then install the air filter case cover
by hooking the holders onto the air filter case.
12. Install the seat.NOTE:The air filter element should be cleaned every 20–
40 hours. It should be cleaned and lubricated more
often if the ATV is operated in extremely dusty ar-
eas. Each time the air filter element maintenance
is performed, check the air inlet of the air filter case
1. Air filter element retaining plate
2. Air filter element frame
3. Sponge material
4. Air filter element seatU10P60E0.book Page 15 Thursday, June 15, 2006 4:19 PM

8-16
8for obstructions. Check the air filter case rubber
joint to the carburetor fittings and the rubber joint
manifold fittings for an air-tight seal. Tighten all fit-
tings securely to avoid the possibility of unfiltered
air entering the engine.CAUTION:ECB00460
Make sure that the air filter element is prop-
erly seated in the air filter case.
Never operate the engine with the air filter el-
ement removed. This will allow unfiltered air
to enter the engine, causing rapid engine
wear and possible engine damage. Addition-
ally, operation without the air filter element
will affect carburetor jetting with subsequent
poor performance and possible engine over-heating.EBU27490Cleaning the spark arrester Be sure the exhaust pipe and muffler are cool be-
fore cleaning the spark arrester.
1. Remove the bolt.2. Remove the tailpipe by pulling it out of the
muffler.
3. Tap the tailpipe lightly, and then use a wire
brush to remove any carbon deposits from the
spark arrester portion of the tailpipe and inside
of the tailpipe housing.
1. Bolt
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10-2
10
Engine oil quantity:
Without oil filter element replacement:
2.50 L (2.64 US qt) (2.20 Imp.qt)
With oil filter element replacement:
2.60 L (2.75 US qt) (2.29 Imp.qt)Air filter:Air filter element:
Wet elementFuel:Recommended fuel:
Regular unleaded gasoline only
Fuel tank capacity:
9.0 L (2.38 US gal) (1.98 Imp.gal)
Fuel reserve amount:
2.7 L (0.71 US gal) (0.59 Imp.gal)Carburetor:Manufacturer:
MIKUNI
Type x quantity:
BSR36 x 1Spark plug (s):Manufacturer/model:
NGK/DR8EA
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)Clutch:Clutch type:
Wet, multiple-disc
Operation:
Left hand operation
Transmission:Primary reduction system:
Spur gear
Primary reduction ratio:
76/24 (3.166)
Secondary reduction system:
Chain drive
Secondary reduction ratio:
38/13 (2.923)
Transmission type:
Constant mesh 6-speed.forward, 1-speed.reverse
Operation:
Left foot operation
Gear ratio:
1st:
36/16 × 20/27 × 29/18 (2.685)
2nd:
33/20 × 20/27 × 29/18 (1.969)
3rd:
29/23 × 20/27 × 29/18 (1.504)
4th:
27/26 × 20/27 × 29/18 (1.239)
5th:
25/28 × 20/27 × 29/18 (1.065)
6th:
23/29 × 20/27 × 29/18 (0.946)
Reverse gear:
33/16 × 33/10 (6.806)Chassis:Frame type:
Steel tube frame
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